LinkedIn - LinkedIn is a business-oriented social networking service, mainly used for professional networking.
Ripple - Ripple connects banks, payment providers, digital asset exchanges and corporates via RippleNet to provide one frictionless experience to send money globally
Read.CV - Mindful professional profiles
CollegeBacker - Crowdfund a tax-free college savings account
SELLFF - SELLFF is a professional network that uses reputation to help people connect with trustworthy providers.
Elpha - The most powerful network for women in tech.